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- Title
Luminescence spectroscopy and energy transfer in Eu/Mn-doped KCaPO phosphors.
- Authors
Hu, Jun; Xie, Hongde; Huang, Yanlin; Wei, Donglei; Seo, Hyo
- Abstract
Eu/Mn-doped KCaPO phosphors were prepared by conventional solid-state reaction. X-ray powder diffraction (XRD), SEM, photoluminescence excitation, and emission spectra, and the luminescence decay curves were measured. Mn singly doped KCaPO shows the weak origin-red luminescence band peaked at about 590 nm. The Eu/Mn co-doped phosphors emit two distinctive luminescence bands: a blue one centered at 480 nm originating from Eu ions and a broad red-emitting one peaked at 590 nm from Mn ions. The luminescence intensity from Mn ions can be greatly enhanced with the co-doping of Eu ions. The efficient energy transfer from Eu to Mn was verified by the photoluminescence spectra together with the luminescence decay curves. The resonance-type energy transfer via a dipole-quadrupole interaction mechanism was supported by the decay lifetimes. The emission colors could be tuned by changing the Mn-doping concentration.
- Subjects
LUMINESCENCE spectroscopy; ENERGY transfer; EUROPIUM; MANGANESE; DOPED semiconductors; POTASSIUM compounds; PHOSPHORS; SOLID state chemistry; X-ray diffraction
- Publication
Applied Physics B: Lasers & Optics, 2014, Vol 114, Issue 4, p461
- ISSN
0946-2171
- Publication type
Article
- DOI
10.1007/s00340-013-5542-y